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As pointed out, the compression tests are failing meaningless because the data is all zeros. A real world test using various forms of data would be far more representative. Also, it would be useful...

It is great that this patch now makes it a Distro selectable option, however, I suspect the "conservative low-risk" choice will be to opt for the BIOS default setting rather than select the...

Be nice if the article mentioned a lot more of the new features of the CPU rather than the "new, shiny, faster" kind of blurb.

I've got some data from some 32 bit vs 32 bit pae vs 64 bit:

http://zinc.canonical.com/~cking/power-benchmarking/blueprint-foundations-p-64bit-by-default/low-memory-systems/results-1/results-1.txt...

We encourage users to participate in the RC6 call for testing. This way we can identify any i915 RC6 related issues and try to get these resolved.
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So what are is Canonical doing?

* Crowd-sourced the testing for the PCIe ASPM (https://wiki.ubuntu.com/Kernel/PowerManagementASPM) to ensure we didn't cause regressions by including Matthew's...

Actually, with i915 rc6 enabled Ubuntu was more power efficient on a Lenovo x220i than Windows - see...

Actually with the i915 rc6 workaround webrowsing and mp3 playback is better than Windows but Phoronix just seemed to be reworking my summary and didn't seem to mention the source data produced during...

Thanks for writing up the work that we've been doing on Power Management. It may be worth holding off a little longer before comprehensively re-measuring the savings since we are still working on...

There is also documentation for fwts here: https://wiki.ubuntu.com/Kernel/Reference/fwts